Clever Fragment: Brilliance

You have been granted a portion of the investiture of Wit, given to one of its chosen vessels.  This vessel housed the shifting and adaptable brilliance of Wit itself.

Gain Proficiency in the Persuasion Skill.  If you are already Proficient, gain Expertise instead.

After each long rest, roll 2d20.  On a roll of 1-18, gain proficiency/expertise with that skill (1 being Athletics, 18 being Survival) until your next long rest. On a roll of 19, you choose the skill.  On a roll of 20, roll twice more.